四川盆地东北部中三叠统雷口坡组四段优质储层发育特征及勘探方向

doi:10.11743/ogg20210411

Abstract

Abstract:

For the purpose of further enhancing the success rate of exploratory wells emplaced in the superposed shallow-karst reservoirs in the 4th member of Leikoupo Formation (hereinafter referred to as Lei 4 Member) to achieve efficient exploration and development in northeastern Sichuan, we comprehensively analyze the reservoir characteristics and major control factors based on rich data from borehole observation, coring and lab analysis.The results show that (1) the Lei 4 Member in the study area is of intraclastic grainstone shoal facies with reservoirs mainly developed in the doloarenite and karst breccia; and the dominant reservoir space is karst caverns and fractures, featuring relatively strong heterogeneity.(2) The analysis of the reservoir genetic mechanism shows that the original pore system of the shoals of tidal flat facies serves as the material basis for high-quality reservoir development.A mass of reservoir space formed by the transformation of karstification is a factor critical for the reservoir development.Thermal dissolution in the burial stage could further improve the reservoir quality.(3) The karstification shows identification markers special to mechanical filling and chemical reaction, and the property of karst fluid and its activity routines in the different karst geomorphic units serve to determine the reservoir quality.The karst mound-platform, which is near source rock laterally and/or has well-developed fracture system, is a desirable zone for future exploration in the northeastern Sichuan Basin.

Key words: karstification, thermal dissolution, shallow, reservoir characteristics, Triassic, Yuanba area, Sichuan Basin

CLC Number:

TE122.2

Jinbao Duan, Mindong Jin, Zhiwei Fan, Xiang Zhu, Yanting Liu. Characteristics and favorable plays for high-quality reservoirs in the Middle Triassic Lei 4 Member, Yuanba area, northeastern Sichuan Basin[J]. Oil & Gas Geology, 2021, 42(4): 898-908.

Figures/Tables 12

Fig.1

Fig.2

Fig.3

Fig.4

Table 1

Fig.5

Fig.6

Fig.7

Fig.8

Fig.9

Table 2

Fig.10

References 25

1	黄东, 张健, 杨光, 等. 四川盆地中三叠统雷口坡组地层划分探讨[J]. 西南石油大学学报(自然科学版), 2011, 33 (3): 89- 95.
	Huang Dong , Zhang Jian , Yang Guang , et al. The discussion of stratum division and stratum for the Leikoupo Formation of Middle Trias-sic in Sichuan Basin[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2011, 33 (3): 89- 95.
2	肖开华, 李宏涛, 段永明, 等. 四川盆地川西气田雷口坡组气藏储层特征及其主控因素[J]. 天然气工业, 2019, 39 (6): 34- 44.
	Xiao Kaihua , Li Hongtao , Duan Yongming , et al. Reservoir characteristics and main controlling factors of the Leikoupo gas pools in the western Sichuan Basin[J]. Natural Gas Industry, 2019, 39 (6): 34- 44.
3	郭旭升. 川西地区中、晚三叠世岩相古地理演化及勘探意义[J]. 石油与天然气地质, 2010, 31 (5): 610- 619.
	Guo Xusheng . Litho-paleogeographic evolution in the Middle-Late Triassic in western Sichuan Province and its significance for petroleum exploration[J]. Oil & Gas Geology, 2010, 31 (5): 610- 619.
4	马永生, 陈洪德, 王国立, 等. 中国南方层序地层与古地理[M]. 北京: 科学出版社, 2009: 310- 311.
	Ma Yongsheng , Chen Hongde , Wang Guoli , et al. sequence stratum and paleogeography of South China[M]. Beijing: Science Press, 2009: 310- 311.
5	范志伟. 元坝气田雷口坡组古溶沟展布及其对气藏的控制[J]. 石油实验地质, 2014, 36 (5): 562- 566.
	Fan Zhiwei . Formation and evolution of weathering-crust reservoir in Leikoupo Formation, Yuanba Area[J]. Natural Gas Technology, 2014, 36 (5): 562- 566.
6	甘学启, 宋文燕, 王志萍. 裂缝对川中雷口坡组风化壳储层发育的影响[J]. 特种油气藏, 2013, 20 (4): 53- 57.
	Gan Xueqi , Song Wenyan , Wang Zhiping . The influence of fractures on the development of weathering crust reservoirs in the Leikoupo Formation in central Sichuan[J]. Special Oil & Gas Reservoirs, 2013, 20 (4): 53- 57.
7	马治鸾, 陈洪德, 钟怡江, 等. 四川盆地东北部元坝地区中三叠统雷口坡组四段古岩溶特征及其油气地质意义[J]. 地质通报, 2012, 31 (4): 577- 585. doi: 10.3969/j.issn.1671-2552.2012.04.011
	Ma Zhiluan , Chen Hongde , Zhong Yijiang , et al. Paleokarstification in carbonates of 4th Member of Middle Triassic Leikoupo Formation in northeastern Sichuan Basin and its petroleum geological significance[J]. Geological Bulletin of China, 2012, 31 (4): 577- 585. doi: 10.3969/j.issn.1671-2552.2012.04.011
8	郭旭升, 胡东风, 李宇平, 等. 四川盆地元坝气田发现与理论技术[J]. 石油勘探与开发, 2018, 45 (1): 14- 26.
	Guo Xusheng , Hu Dongfeng , Li Yuping , et al. Discovery and theoretical and technical innovations of Yuanba gas field in Sichuan Basin, SW China[J]. Petroleum Exploration and Development, 2018, 45 (1): 14- 26.
9	胡东风. 普光气田与元坝气田礁滩储层特征的差异性及其成因[J]. 天然气工业, 2011, 31 (10): 17- 21.
	Hu Dongfeng . Differences in reef-bank reservoir features between Puguang and Yuanba gas fields and their reasons[J]. Natural Gas Industry, 2011, 31 (10): 17- 21.
10	段金宝, 代林呈, 李毕松, 等. 四川盆地北部上震旦统灯影组四段储层特征及其控制因素[J]. 天然气工业, 2019, 39 (7): 9- 20.
	Duan Jinbao , Dai Lincheng , Li Bisong , et al. Reservoir characteristics and their controlling factors of the fourth Member of Upper Sinian Dengying Formation in the northern Sichuan Basin[J]. Natural Gas Industry, 2019, 39 (7): 9- 20.
11	孔强夫, 杨才, 李浩, 等. 基于图论聚类和最小临近算法的岩性识别方法——以四川盆地西部雷口坡组碳酸盐岩储层为例[J]. 石油与天然气地质, 2020, 41 (4): 885- 890.
	Kong Qiangfu , Yang Cai , Li Hao , et al. A lithology recognition method based on multi-resolution graph-based clustering and K-Nearest Neighbor: A case study from the Leikoupo Formation carbonate reservoirs in western Sichuan Basin[J]. Oil & Gas Geology, 2020, 41 (4): 885- 890.
12	郝哲敏, 许国明, 陈洪德, 等. 川西坳陷马井地区中三叠统雷四3亚段储层孔隙类型与面孔率定量研究[J]. 石油与天然气地质, 2020, 41 (2): 381- 392.
	Hao Zhemin , Xu Guoming , Chen Hongde , et al. Pore classification and thin section porosity quantification of reservoir in the T₂l⁴⁽³⁾ in Majing area, Western Sichuan Basin[J]. Oil & Gas Geology, 2020, 41 (2): 381- 392.
13	周凌方, 钱一雄, 宋晓波, 等. 四川盆地西部彭州气田中三叠统雷口坡组四段上亚段白云岩孔隙表征、分布及成因[J]. 石油与天然气地质, 2020, 41 (1): 178- 188.
	Zhou Lingfang , Qian Yixiong , Song Xiaobo , et al. Characteristics, distribution and origin of dolomite reservoir in the upper Lei 4 member of the Middle Triassic, Pengzhou gas field, western Sichuan Basin[J]. Oil & Gas Geology, 2020, 41 (1): 178- 188.
14	郭旭升, 胡东风, 段金宝. 中国南方海相油气勘探展望[J]. 石油实验地质, 2020, 42 (5): 675- 686.
	Guo Xusheng , Hu Dongfeng , Duan Jinbao . Marine petroleum exploration in South China[J]. Petroleum Geology & Experiment, 2020, 42 (5): 675- 686.
15	郭旭升, 郭彤楼, 黄仁春, 等. 中国海相油气田勘探实例之十六: 四川盆地元坝大气田的发现与勘探[J]. 海相油气地质, 2014, 19 (4): 57- 64.
	Guo Xusheng , Guo Tonglou , Huang Renchun , et al. Cases of discovery and exploration of marine fields in China (Part 16): Yuanba gas field in Sichuan Basin[J]. Marine Origin Petroleum Geology, 2014, 19 (4): 57- 64.
16	何江, 方少仙, 侯方浩, 等. 鄂尔多斯盆地中部气田中奥陶统马家沟组岩溶型储层特征[J]. 石油与天然气地质, 2009, 30 (3): 350- 356.
	He Jiang , Fang Shaoxian , Hou Fanghao , et al. Characteristics of karst reservoirs in the Middle Ordovician Majiagou Formation of gas fileds in the central Ordos Basin[J]. Oil & Gas Geology, 2009, 30 (3): 350- 356.
17	Tinker S W, Mruk D H. Reservoir characterization of a Permian giant: Yates field, West Texas[C]//Stoudt E L, Harris P M. Hydrocarbon reservoir characterization: Geologic frame-work and flow unit modeling. Tulsa: SEPM, 1995.
18	Moore C H . Carbonate reservoirs porosity evolution and diagenesis in a sequence stratigraphic framework[M]. Amsterdam: Elsevier, 2001: 1- 225.
19	施振生, 王秀芹, 吴长江. 四川盆地上三叠统须家河组重矿物特征及物源区意义[J]. 天然气地球科学, 2011, 22 (4): 618- 627.
	Shi Zhensheng , Wang Xiuqin , Wu Changjiang . The heavy minerals and provenances of the Upper Triassic Xujiahe Formation in Sichuan Basin[J]. Natural Gas Geoscience, 2011, 22 (4): 618- 627.
20	朱梅湘, 张秀莲, 王英华. 中下扬子区三叠纪海相碳酸盐岩成岩作用和成岩环境[J]. 古地理学报, 2000, 2 (4): 43- 50.
	Zhu Meixiang , Zhang Xiulian , Wang Yinghua . The diageneses and diagenetic environments of marine carbonate rocks of the Triassic in the Lower-Middle Yangtze region[J]. Journal of Palaeogeography, 2000, 2 (4): 43- 50.
21	黄思静, 黄可可, 吕杰, 等. 早三叠世海水的碳同位素组成与演化——来自四川盆地东部的研究[J]. 中国科学: 地球科学, 2012, 42 (10): 1508- 1522.
	Huang Sijing , Huang Keke , Lv Jie , et al. Carbon isotopic composition of Early Triassic marine carbonates, Eastern Sichuan Basin, China[J]. Scientia Sinica(Terrae), 2012, 42 (10): 1508- 1522.
22	Allan J R , Wiggins W D . Dolomite reservoirs: Geochemical techniques for evaluating origin and distribution[M]. Tulsa: AAPG, 1996.
23	江青春, 胡素云, 汪泽成, 等. 四川盆地茅口组风化壳岩溶古地貌及勘探选区[J]. 石油学报, 2012, 33 (6): 950- 960.
	Jiang Qingchun , Hu Suyun , Wang Zecheng , et al. Paleokarst landform of the weathering crust of Middle Permian Maokou Formation in Sichuan Basin and selection of exploration regions[J]. Acta Petrolei Sinica, 2012, 33 (6): 950- 960.
24	夏明军, 戴金星, 邹才能, 等. 鄂尔多斯盆地南部加里东期岩溶古地貌与天然气成藏条件分析[J]. 石油勘探与开发, 2007, 34 (3): 291- 315.
	Xia Mingjun , Dai Jinxing , Zou Caineng , et al. Caledonian karst palaeogeomorphology and the forming condition of gas pool, southern Ordos Basin[J]. Petroleum Exploration and Development, 2007, 34 (3): 291- 315.
25	王鑫, 辛勇光, 田瀚, 等. 四川盆地中三叠统雷口坡组沉积储层研究进展[J]. 海相油气地质, 2020, 25 (3): 210- 222.
	Wang Xin , Xin Yongguang , Tian Han , et al. Research progress on sedimentation and reservoir of Leikoupo Formation of Middle Triassic in Sichuan Basin[J]. Marine Origin Petroleum Geology, 2020, 25 (3): 210- 222.

井名	深度/m	岩性	氦气孔隙度/%	平均渗透率/(10^-3μm²)	沉积亚相
YB12	4 658.87	云质角砾岩，角砾成分主要为砂屑白云岩	7.95	32.631 1	颗粒滩
YB12	4 657.09	云质角砾岩，角砾成分主要为砂屑白云岩	6.01	3.041 0	颗粒滩
YB12	4 660.10	砂屑白云岩	4.88	0.008 0	颗粒滩
YB4	5 017.27	灰质白云岩	3.89	313.944 7	台坪
YB204	4 873.71	灰质白云岩	3.81	0.045 4	台坪
YB4	5 014.34	云质角砾岩，角砾成分主要为砂屑白云岩	3.43	0.001 2	颗粒滩
YB204	4 872.31	灰质白云岩	3.11	39.320 5	台坪
YB12	4 661.09	砂屑白云岩	2.96	0.004 1	颗粒滩
YB12	4 664.46	粉-泥晶藻屑白云岩	2.46	35.720 9	台坪
YB12	4 660.30	云质角砾岩，角砾成分主要为砂屑白云岩	2.45	0.323 4	颗粒滩
YB12	4 660.52	粉晶白云岩	2.39	0.601 0	台坪
YB4	5 016.73	粉晶白云岩	2.39	0.106 2	台坪
YB12	4 661.60	粉-泥晶藻屑白云岩	2.38	1.242 1	台坪
YB204	4 863.32	灰质白云岩	2.24	6.832 4	台坪
YB4	5 019.33	灰质白云岩	2.20	164.945 7	台坪
YB12	4 657.49	灰质角砾岩，角砾成分主要为砂屑灰岩	2.13	0.004 3	颗粒滩
YB4	5 020.03	粉晶残余藻屑白云岩	1.88	1.203 5	台坪
YB204	4 877.13	膏质白云岩	1.67	0.006 5	潟湖
YB204	4 875.87	膏质白云岩	1.19	0.002 9	潟湖

井号	埋深/m	含量/%
井号	埋深/m	Na₂O	MgO	K₂O	CaO	FeO	SrO	BaO
YB4	5 016.2	0	21.331	0	30.378	0.806	0.068	0
YB12	4 658.9	0	21.478	0	30.406	0.959	0.013	0
YB204	4 889.9	0	21.404	0.008	30.485	0.827	0	0

[1]	Rui FANG, Yuqiang JIANG, Changcheng YANG, Haibo DENG, Chan JIANG, Haitao HONG, Song TANG, Yifan GU, Xun ZHU, Shasha SUN, Guangyin CAI. Occurrence states and mobility of shale oil in different lithologic assemblages in the Jurassic Lianggaoshan Formation， Sichuan Basin [J]. Oil & Gas Geology, 2024, 45(3): 752-769.
[2]	Xiao HE, Maja ZHENG, Yong LIU, Qun ZHAO, Xuewen Shi, Zhenxue Jiang, Wei WU, Ya WU, Shitan NING, Xianglu TANG, Dadong LIU. Characteristics and differential origin of Qiongzhusi Formation shale reservoirs under the “aulacogen-uplift” tectonic setting， Sichuan Basin [J]. Oil & Gas Geology, 2024, 45(2): 420-439.
[3]	Changbo ZHAI, Liangbiao LIN, Donghua YOU, Fengbin LIU, Siyu LIU. Sedimentary microfacies characteristics and organic matter enrichment pattern of the 1^st member of the Middle Permian Maokou Formation， southwestern Sichuan Basin [J]. Oil & Gas Geology, 2024, 45(2): 440-456.
[4]	Heyi ZHANG, Shuai YANG, Xihua ZHANG, Hanlin PENG, Qian LI, Cong CHEN, Zhaolong GAO, Anqing CHEN. Sedimentary microfacies and environmental evolution of the Middle Permian Maokou Formation in the eastern Sichuan Basin： A case study of the Yangjiao section in Wulong District， Chongqing， China [J]. Oil & Gas Geology, 2024, 45(2): 457-470.
[5]	Hui PAN, Yuqiang JIANG, Xun ZHU, Haibo DENG, Linke SONG, Zhanlei WANG, Miao LI, Yadong ZHOU, Linjie FENG, Yongliang YUAN, Meng WANG. Evaluation of geological sweet spots in fluvial tight sandstone gas： A case study of the first submember of the second member of the Jurassic Shaximiao Formation， central Sichuan Basin [J]. Oil & Gas Geology, 2024, 45(2): 471-485.
[6]	Rui LI, Jiao YANG, Yukun CHAI, Hua WANG, Jianwen DAI, Yonghui DENG, Shuang SUN, Xiaolin MA, Tengfei TIAN. A novel sedimentary pattern of wave-induced sandbars under high-angle wave incidence [J]. Oil & Gas Geology, 2024, 45(2): 530-541.
[7]	Liang SHI, Bojiang FAN, Zhonghou LI, Ziwei YU, Zijin LIN, Xinyang DAI. Migration differentiation of hydrocarbon components in the 7^th member of the Triassic Yanchang Formation， central Ordos Basin [J]. Oil & Gas Geology, 2024, 45(1): 157-168.
[8]	Baoshou ZHANG, Benjian ZHANG, Hua WANG, Jianfa CHEN, Kaixuan LIU, Shuang DOU, Xin DAI, Shuangling CHEN. The Jinqiu gas field in the Sichuan Basin： A typical helium-bearing to helium-rich gas field with the Mesozoic sedimentary rocks as helium source rocks [J]. Oil & Gas Geology, 2024, 45(1): 185-199.
[9]	Zhili ZHANG, Yanping QIAO, Shuang DOU, Kunyu LI, Yuan ZHONG, Luya WU, Baoshou ZHANG, Xin Dai, Xin JIN, Bin WANG, Jinmin SONG. Karst paleogeomorphology and reservoir control model of the 2^nd member of Dengying Formation in Penglai gas area， Sichuan Basin， China [J]. Oil & Gas Geology, 2024, 45(1): 200-214.
[10]	Guangfu WANG, Fengxia LI, Haibo WANG, Tong ZHOU, Yaxiong ZHANG, Ruyue WANG, Ning LI, Yuxin CHEN, Xiaofei XIONG. Difficulties and countermeasures for fracturing of various shale gas reservoirs in the Sichuan Basin [J]. Oil & Gas Geology, 2023, 44(6): 1378-1392.
[11]	Zongquan HU, Ruyue WANG, Jing LU, Dongjun FENG, Yuejiao LIU, Baojian SHEN, Zhongbao LIU, Guanping WANG, Jianhua HE. Storage characteristic comparison of pores between lacustrine shales and their interbeds and differential evolutionary patterns [J]. Oil & Gas Geology, 2023, 44(6): 1393-1404.
[12]	Dongfeng HU, Zhihong WEI, Ruobing LIU, Xiangfeng WEI, Wei WANG, Qingbo WANG. Discovery of the Qijiang shale gas field in a structurally complex region on the southeastern margin of the Sichuan Basin and its implications [J]. Oil & Gas Geology, 2023, 44(6): 1418-1429.
[13]	Hongyan WANG, Shangwen ZHOU, Qun ZHAO, Zhensheng SHI, Dexun LIU, Pengfei JIAO. Enrichment characteristics， exploration and exploitation progress， and prospects of deep shale gas in the southern Sichuan Basin， China [J]. Oil & Gas Geology, 2023, 44(6): 1430-1441.
[14]	Zhensheng SHI, Shengxian ZHAO, Tianqi ZHOU, Shasha SUN, Yuan YUAN, Chenglin ZHANG, Bo LI, Ling QI. Types and genesis of horizontal bedding of marine gas-bearing shale and its significance for shale gas： A case study of the Wufeng-Longmaxi shale in southern Sichuan Basin， China [J]. Oil & Gas Geology, 2023, 44(6): 1499-1514.
[15]	Ruikang BIAN, Chuanxiang SUN, Haikuan NIE, Zhujiang LIU, Wei DU, Pei LI, Ruyue WANG. Types， characteristics， and exploration targets of deep shale gas reservoirs in the Wufeng-Longmaxi formations， southeastern Sichuan Basin [J]. Oil & Gas Geology, 2023, 44(6): 1515-1529.

Characteristics and favorable plays for high-quality reservoirs in the Middle Triassic Lei 4 Member, Yuanba area, northeastern Sichuan Basin

RichHTML

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 12

References 25

Related Articles 15

Recommended Articles

Metrics